Railways Patent Leaders | Patent Leaderboard

Rankings count each patent once by its primary Cooperative Patent Classification. All-time pages aggregate the full database; year pages use patent grant year.

Recent years: 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025

Patents per Year

Top Inventors

Rank ↑	Inventor ↕	Patents ↕	Primary Company ↕
1	Ajith Kuttannair Kumar	121	GE
2	James W. Forbes	105	National Steel Car Limited
3	Jared Klineman Cooper	76	GE
#4	Jeffrey Michael Fries	50	Alstom Transport Technologies
#5	Bret Dwayne Worden	45	GE
#6	Takehiro Nishimura	42	Kawasaki
#7	James D. Brooks	41	GE
#8	Wolfgang Daum	41	GE
#9	Joseph Forrest Noffsinger	40	GE
#10	Mark Bradshaw Kraeling	40	GE
#11	Kenneth W. Huck	39	Trinity North American Freight Car
#12	David Michael Peltz	38	GE
#13	Eugene Smith	37	GE
#14	Jeffrey D. Kernwein	33	—
#15	Mark Edward Kane	33	Quantum Engineering
#16	F. Andrew Nibouar	32	Bedloe Industries
#17	Gregory J. Saxton	32	Gunderson
#18	Harry Kirk Mathews, Jr.	32	GE
#19	Wajih Kanjo	32	Westinghouse Air Brake
#20	David W. Daugherty, Jr.	31	Higher Ground
#21	Glenn Robert Shaffer	31	GE
#22	Robert James Foy	31	GE
#23	James Francis Shockley	30	Quantum Engineering
#24	Tomasz Bis	30	National Steel Car Limited
#25	Michael E. Ring	29	—
#26	Manuel Tavares	28	Pennsy
#27	Howard Sommerfeld	27	—
#28	Peter M. Bartek	27	—
#29	Harrison Thomas Hickenlooper	26	Quantum Engineering
#30	Horst T. Kaufhold	26	Amsted Industries Incorporated
#31	Jerry R. Smerecky	26	Bedloe Industries
#32	Stephen W. Smith	26	Trn Business Trust
#33	Todd William Goodermuth	26	GE
#34	Walter J. Peach	26	Standard Car Truck
#35	John William Brand	25	GE
#36	Jamal Hematian	24	National Steel Car Limited
#37	Kousuke Katahira	24	Mitsubishi Electric
#38	Russell G. Altherr	24	Amsted Industries Incorporated
#39	Shunichi Nakao	24	Kawasaki
#40	Thomas H. Engle	24	Federal Signal
#41	Jan K. Kunczynski	23	Unknown
#42	Michael K. Burke	23	Zeftek
#43	Trond Austrheim	23	Autostore Technology As
#44	Yasuo Ishimaru	23	Hitachi
#45	Yoshi Sato	23	Kawasaki
#46	John Erik Hershey	22	GE
#47	Martin Teichmann	22	Siemens Ag Österreich
#48	David Allen Eldredge	21	GE
#49	George S. Creighton	21	Trinity Industrial
#50	John D. Anderson	21	Standard Car Truck
#51	Kinya Aota	21	Hitachi
#52	Tsuyoshi Takenaka	21	Hitachi
#53	Stephen R. Early	20	Aero Transportation Products
#54	Toshiyuki Hirashima	20	Kawasaki
#55	Wayne H. Murphy	20	Pennsy
#56	Yukitaka Taga	20	Kawasaki
#57	Zachary Ryan Brook	20	Pennsy
#58	Zahid F. Mian	20	International Electronic Machines
#59	Alexander Shubs, Jr.	19	Electro-Motive Diesel
#60	Fumikazu Kounoike	19	Kawasaki
#61	James David Seaton	19	Electro-Motive Diesel
#62	Matthew Barker	19	Canadian National Railway
#63	Mitchell Scott Wills	19	GE
#64	Mohamed A. Khattab	19	National Steel Car Limited
#65	Paul Steven Wike	19	Amsted Rail Company
#66	Phillip G. Przybylinski	19	Trinity Industrial
#67	Ronald P. Sellberg	19	Bedloe Industries
#68	Alain Rodet	18	—
#69	David J. Goding	18	Electro-Motive Diesel
#70	Erik L. Gotlund	18	Nevis Industries
#71	Ilario A. Coslovi	18	National Steel Car Limited
#72	Josef Theurer	18	Franz Plasser Bahnbaumaschinen-Industrie-Gesellschaft Mbh
#73	Peter S. Mautino	18	Mcconway & Torley
#74	V. Terrey Hawthorne	18	Amsted Industries Incorporated
#75	Alon Green	17	Thales Canada
#76	Anshu Pathak	17	Canadian National Railway
#77	Boris S. Terlecky	17	Trailer Train
#78	Jerry W. Vande Sande	17	Trinity North American Freight Car
#79	Kari Muinonen	17	Canadian National Railway
#80	Keiichiro Kamura	17	Kawasaki
#81	Kurt A. Gunther	17	Metrom Rail
#82	Shaun Richmond	17	Thrall Car Manufacturing
#83	Thierry Le Moigne	17	Aktiebolaget Skf
#84	Vincent Morency	17	Canadian National Railway
#85	William Cherrick Schoonmaker	17	GE
#86	Aubra D. McKisic	16	Trinity Industrial
#87	David Matthew Roenspies	16	Progress Rail Locomotive
#88	Hiroyuki Kono	16	Mitsubishi Electric
#89	Jeremy Jovenall	16	Cattron North America
#90	John W. Coulborn	16	Trn Business Trust
#91	Kyle R. Coston	16	Trinity Rail Group
#92	Michael J. Schmidt	16	Pennsy
#93	Paul Kenneth Houpt	16	GE
#94	Robert L. Bullock	16	Standard Car Truck
#95	Roshan N. Manibharathi	16	Nevis Industries
#96	Roy W. Miller	16	The Pullman
#97	Scott Natschke	16	—
#98	Steven Andrew Kellner	16	GE
#99	Sumio Okuno	16	Hitachi
#100	William A. Kurtzhals	16	Nevis Industries

Top Companies

Rank ↑	Company ↕	Patents ↕
1	GE	499
2	Westinghouse Air Brake	350
3	Siemens Mobility Gmbh	228
#4	Mitsubishi Electric	185
#5	Kawasaki	175
#6	Siemens Aktiengesellschaft	171
#7	National Steel Car Limited	145
#8	Alstom Transport Technologies	142
#9	Amsted Industries Incorporated	130
#10	Hitachi	126
#11	Transportation Ip Holdings	102
#12	Bombardier Transportation Gmbh	94
#13	Miner Enterprises	94
#14	Bnsf Railway	78
#15	Electro-Motive Diesel	75
#16	Acf Industries Incorporated	73
#17	Amsted Rail Company	70
#18	Gunderson	70
#19	Unknown	66
#20	Union Switch & Signal	64
#21	The Pullman	62
#22	Trinity Industrial	62
#23	Innova Patent Gmbh	59
#24	Thrall Car Manufacturing	53
#25	Crrc Qingdao Sifang Co.	52
#26	Daifuku Co.	52
#27	Standard Car Truck	52
#28	Pomagalski Sa.	51
#29	Mcconway & Torley	50
#30	Federal Signal	46
#31	Trn Business Trust	46
#32	Knorr-Bremse Systeme Für Schienenfahrzeuge Gmbh	45
#33	American Standard	43
#34	Progress Rail Services	41
#35	The Budd	41
#36	Voith Patent Gmbh	41
#37	Pennsy	37
#38	Trinity Rail Group	37
#39	Byd Company Limited	36
#40	Siemens Industry	34
#41	Alstom Technology	33
#42	Holland	33
#43	Aktiebolaget Skf	32
#44	Thales Canada	31
#45	Westinghouse Brake And Signal Holdings Limited	30
#46	Dayco Holdings, Lp	29
#47	Harsco	29
#48	Siemens Ag Österreich	29
#49	IBM	29
#50	Si Handling Systems	28
#51	Kabushiki Kaisha Toshiba	27
#52	Quantum Engineering	27
#53	Autostore Technology As	26
#54	Leitner S.P.A.	26
#55	Murata Machinery	25
#56	Progress Rail Locomotive	25
#57	Bedloe Industries	24
#58	Casco Signal	24
#59	Jervis B. Webb	24
#60	Siemens Mobility Austria Gmbh	24
#61	Trinity North American Freight Car	24
#62	Westinghouse Electric	24
#63	Zeftek	24
#64	Gec Alsthom Transport Sa	23
#65	A. Stucki	22
#66	Canadian National Railway	22
#67	Jac Operations	22
#68	Dellner Couplers Ab	21
#69	Ensco	21
#70	Nippon Sharyo	21
#71	Pullman Standard	21
#72	Aero Transportation Products	20
#73	International Electronic Machines	20
#74	Knorr-Bremse Ag	20
#75	Nippon Steel & Sumitomo Metal	20
#76	Safetran Systems	20
#77	Strato	20
#78	The Boeing	20
#79	Tsubakimoto Chain	20
#80	Franz Plasser Bahnbaumaschinen-Industrie-Gesellschaft Mbh	19
#81	Parallel Systems	19
#82	Poma	19
#83	Vae Gmbh	19
#84	General Motors	19
#85	Asf Keystone	18
#86	Nabtesco	18
#87	National Casting Incorporated	18
#88	Nippon Signal Co.	18
#89	Union Pacific Railroad	18
#90	Buckeye Steel Castings	17
#91	Mannesmann Ag	17
#92	Nevis Industries	17
#93	Powerbrace	17
#94	Comcast	17
#95	Harmon Industries	16
#96	Lockheed Martin	16
#97	Cattron North America	15
#98	Dresser Industries	15
#99	General Railway Signal	15
#100	Kyosan Electric Mfg. Co.	15

Railways Patent Leaders All Time

Patents per Year

Top Inventors

Top Companies